Question

Which among the following is recommended for const functions?

(a) Const function use should be reduced in a program

(b) Const function use should be more in a program

(c) Const function use should not matter in a program

(d) Const function use should be able to modify the values

I have been asked this question during an online exam.

Origin of the question is Constant Member Functions topic in portion Member Functions & its Types of Object Oriented Programming

Answer 1

Right option is (b) Const function use should be more in a program

For explanation: The const member functions should be used more in a program. The reason behind is to ensure there is no accidental modification of data of object. Also to ensure any unintended modification which may result in unexpected termination of program.